CVE-2026-34210
March 30, 2026
Impact The "stripe/charge" payment method did not check Stripe's "Idempotent-Replayed" response header when creating PaymentIntents. An attacker could replay a valid credential containing the same "spt" token against a new challenge, and the server would accept the replayed Stripe PaymentIntent as a new successful payment without actually charging the customer again. This allowed an attacker to pay once and consume unlimited resources by replaying the credential. Patches Fixed in 0.4.11. The server now checks the "Idempotent-Replayed" header and rejects replayed PaymentIntents. Workarounds There are no workarounds available for this vulnerability.
Affected Packages
https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11https://github.com/wevm/mppx.git (GITHUB):
Affected version(s) >=mppx@0.1.0 <mppx@0.4.11Fix Suggestion:
Update to version mppx@0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11mppx (NPM):
Affected version(s) >=0.0.1 <0.4.11Fix Suggestion:
Update to version 0.4.11Related Resources (5)
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Contact UsCVSS v4
Base Score:
6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Incorrect Comparison
